1 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Born in a poor American family, John Smith depended on scholarships     1     (pay) for his tuition fees when studying in a medical college. After graduation, he rejected an offer in New York, came to Wuhan and     2     (hire) by a local hospital. He held the principle that he should never complain about the working pressure but make positive responses     3     his patients in need.

He tended them     4     (careful), organized first aid lessons, and saved many people’s lives with his professional knowledge. That impressed a girl     5     was working in a local clinic. She fell in love with this caring doctor. Two years later, they got married. A decade later, he was elected chairman of the local medical association, the first foreigner in that position. This chain of events made him the     6     (happy) man in the world.

Then came the outbreak of COVID-19 in Wuhan. With the number of     7     (infect) patients increasing sharply, he helped carry these people through the disease together with many other medical     8     (worker). After     9     great deal of effort, the majority of the patients recovered. However, he himself was badly infected. Having fought against COVID-19 for a month, he passed away, leaving his family in tears and in despair.     10     (hear) the sad news, many people sent flowers to the hospital in memory of his contribution.

4 . 听下面一段对话，回答以下小题。
1. What was wrong with Tom?

A．He was hit by a taxi.

B．He hurt his head.

C．He fell ill with heart trouble.

2. What did the woman do?

A．She called the doctor.

B．She checked Tom carefully.

C．She took Tom to the hospital.

5 . This year brought some exciting news for patients of Alzheimer’s disease and their families. Leqembi, a new drug for the disease made through a US-Japanese partnership, has been available in a pilot zone in China’s Hainan province since September.

Being a currently uncurable disease, Alzheimer’s disease damages or even kills nerve cells (神经细胞) in the brain. Damaged cells can cause breakdowns in various parts of the brain, resulting in memory loss, according to the Alzheimer’s Association. A kind of plaque (斑块) made up of protein is the “suspect”. Plaques build up in the spaces between nerve cells, which can break up the communication between cells. Although most people develop such plaques as they age, Alzheimer’s patients tend to have more, beginning in the areas responsible for memory.

This July, the US Food and Drug Administration (FDA) fully approved Leqembi. It became the first Alzheimer’s drug to receive FDA approval in 20 years. Leqembi is designed to “remove plaques that have already formed and prevents them from forming”, US medical expert Jon LaPook told CBS News. Therefore, the drug can only be effective in those who are in the early stage of the disease. Patients would also need to have evidence of plaques in their brain, which can be detected through brain scans or blood tests.

Sadly, this drug is not a cure. According to the FDA’s press release, after a 79-week trial on human patients, the drug could slow but not reverse (逆转) the development of the disease and its related effect on memory. What it offers is a way for patients with Alzheimer’s to maintain their ability to live a more or less normal life for longer.

According to the World Health Organization, at least 55 million people are living with dementia (痴呆) worldwide, with Alzheimer’s disease being the most common cause. As scientists make more effort, there’s growing hope that they can one day create a world where Alzheimer’s disease no longer affects millions of families like it used to.

1. What makes Alzheimer’s patients excited?

A．A US-Japanese partnership.	B．Damaged nerve cells in the brain.
C．A new drug for Alzheimer’s disease.	D．A kind of plaque in the memory area.

2. In what way is Leqembi effective in Alzheimer’s?

A．It can detect the plaque in patients’ brain.

B．It can reverse the development of disease.

C．It can be used in the late stage of the disease.

D．It can remove plaques and prevent their forming.

3. What is the author’s attitude toward curing Alzheimer’s disease?

A．Doubtful.

B．Uncaring.

C．Positive.

D．Negative.

4. What can be a suitable title for the text?

A．Progress in Treating Alzheimer’s Disease

B．A Promising Treatment for Alzheimer’s Disease

C．The Impact of Alzheimer’s Disease on Patients

D．The Role of Plaque in Alzheimer’s Disease

6 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

This year’s Nobel Prize in physiology or medicine has been awarded to Katalin Karikó and Drew Weissman for their work on mRNA vaccines,     1     crucial tool in limiting the spread of Covid-19. The Nobel Prize committee announced the extraordinary honor,     2    (see) as the summit (顶峰) of scientific     3    (achieve), in Sweden on Monday.

Karikó, a Hungarian-American biochemist, and Weissman, an American physician, are both professors at the University of Pennsylvania. The committee praised the scientists “groundbreaking findings”, which fundamentally changed our understanding of     4     mRNA and our immune system affect each other. They published their results in a 2005 paper    5     received little attention at the time, but later laid the foundation for     6     (critical) important developments that served humanity during the coronavirus pandemic,     7    (contribute) to the high rate of vaccine development.

Rickard Sandberg, a member of the Nobel Prize in medicine committee, said, “Because of mRNA vaccines and other Covid-19 vaccines, millions of lives     8    (save) in the past few years.” The revolutionary technology has opened a new chapter of medicine. It can potentially be made use of       9    (develop) vaccines against other diseases like malaria, RSV and HIV. It also offers a new approach     10     infectious disease like cancer, with the prospect of personalized vaccines.

7 . A quick increase of dopamine (多巴胺) shifts mice into a dreamy stage of sleep. In the mice’s brains, the chemical messenger triggers rapid-eye-movement sleep, or REM, researchers report in the March 4 Science.

These new results are some of the first to show a trigger for the shifts. Understanding these transitions in more detail could ultimately point to ways to treat sleep disorders in people.

Certain nerve cells in the ventral tegmental area of the mouse brain can pump out dopamine, a molecule that has been linked to pleasure, movement and learning, which is then delivered dopamine to the amygdalae, two almond-shaped structures deep in the brain that are closely tied to emotions.

Using a molecular sensor that can tell exactly when and where dopamine is released, the researchers saw that dopamine levels rose in the amygdalae just before mice shifted from non-REM sleep to REM sleep.

Next, the researchers forced the mice into the REM phase by controlling those dopamine-producing nerve cells using lasers and genetic techniques. Compelled with light, the nerve cells released dopamine in the amygdalae while mice were in non-REM sleep. The mice then shifted into REM sleep sooner than they typically did, after an average of about two minutes compared with about eight minutes for mice that weren’t prompted to release dopamine. Stimulating these cells every half hour increased the mice’s total amount of REM sleep.

Additional experiments suggest that these dopamine-making nerve cells may also be involved in aspects of narcolepsy (嗜睡症). A sudden loss of muscle tone, called cataplexy, shares features with REM sleep and can accompany narcolepsy. Stimulating these dopamine-making nerve cells while mice were awake caused the mice to stop moving and fall directly into REM sleep.

The results help clarify a trigger for REM in mice; whether a similar thing happens in people isn’t known. Earlier studies have found that nerve cells in people’s amygdalae are active during REM sleep.

Many questions remain. Drugs that change dopamine levels in people don’t seem to have big effects on REM sleep and cataplexy. But these drugs affect the whole brain, and it’s possible that they are just not selective enough.

1. What can we learn from this passage?

A．People with sleep disorders could benefit from the research.

B．Dopamine is generated in two almond-shaped structures.

C．Dopamine levels rose after mice shifted to REM sleep.

D．An increase of dopamine can trigger REM in people.

2. The underlined word “they” in the last paragraph refers to ______.

A．the entire brain

B．REM sleep and cataplexy

C．drugs affecting dopamine levels

D．people suffering from sleep disorders

3. What is the main purpose of the passage?

A．To introduce two stages of sleep of all animals.

B．To explain dopamine as a trigger for REM in mice.

C．To present a new way to cure sleep disorders in people.

D．To propose a pioneer research interest in brain structure.

10 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Robots are highly beneficial to healthcare. Statistics show that around 16 million patients in China are     1     need of orthopedic (矫形外科的) surgery. Surgical robots help surgeons figure out the problem,     2     carry the risk of exposing both surgeons and patients to radiation damage. The all-in-one orthopedic robot (AIOOR) solves this problem. Developed by orthopedic     3     (special) Zhang Yuanzhi and his team, AIOOR is the first of its kind in China. Its cutting-edge imaging system and software     4     (short) the time needed for complex operations, such as those for spinal injuries, and also makes such surgeries much     5     (safe).

Advanced robotics, moreover, considerably eases patients’ discomfort created by the traditional gastroscopy (胃镜),     6     requires that the physician put a tube down the patient’s mouth to the stomach. The discomfort is unbearable to many patients,     7     (make) some avoid checkups and consequently miss the best time for treatment. The NaviCam, a system developed by ANKON Medical Technologies in Shanghai, enables     8     (entire) painless stomach visualization instead. Patients only need to “eat”     9     capsule-sized robot, and the examination is completed within 15 minutes. After the procedure, the robot is removed from patients’ body. So far, these robots     10     (employ) in about 1,000 medical centers across China.